Stove-damper lock.



no. 629,347. Patented July 25, I899.

T. r. FALLDN.

STOVE DAMPER LOCK.

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1 U ITED STATES PATENT OFFICE.

THOMAS FRANCIS FALLON, OF LAWRENCE, MASSACHUSETTS.

ST OVE- DAM PER LOG-K.

SPECIFICATION forming part of Letters Patent No. 629,347, dated July25,1899.

Application filed January 9,1899. $erial No. 701,612. (N model.)

To atZZ whom, it may concern:

Be it known that I, THOMAS FRANCIS FAL- LON, a citizen of the UnitedStates, residing at Lawrence, in the countyof Essex and State ofMassachusetts, have I invented a new and useful stove Damper Look, ofwhich the following is a specification.

My invention relates to devicesfor locking dampers in stove pipes orflues;'and the primary object of the invent-ion is to provide a simplecontrivance which may be easily and' quickly applied to ordinary stovepipes or dampers for the'purpose of holding the latter securely in theposition to which it may be adjusted.

A further object of the invention is to provide'alocking contrivancedesigned to be held in place on the Stovepipe by a clamping band orcollar, thereby obviating the necessity for riveting, soldering, orotherwise permanently uniting the locking contrivance in place.

A further object of the inventionis to provide a locking contrivance inwhich a spring locking stem or arm is adapted to be readily fastened tothe finger-piece of an ordinary damper and to hold itself firmly inengagement by its inherent elasticity with a segment.

\Vith these ends in view the invention con-;

sists in the novel combination of elements and in the construction andarrangement of parts, which will be hereinafter fully described andclaimed. o

To enable others to understand the invention, I have illustrated thepreferred embodiment thereof in the accompanying drawings, forming apart of. this specification, and in which- 1 Figure 1 is an elevation ofa portion of a Stovepipe with my locking contrivance applied to the pipeand the damper therein. Fig. 2 is a cross-section through the pipe,illustrating the damper and the locking device therefor in plan. Fig. 3is a detail perspective view of the clamping band or collar equipped.with a holding-segment. Fig. '4; is a detail perspective view of thespring locking-arm. Like numerals of reference denote like andcorresponding parts in each of the several figures of the drawings.

The stationary element of the locking device contemplatedbymyinventionis attached to and supported by a clamping band or colhestationary element, hereinbefore referred'to, of my locking deviceispreferably e' nbodied'in'the form of a segment 13, which is representedby the drawings as being cast ina single piece of metal. Atone end thiscast-metal segment is enlarged or widened to formthe attaching-plate 14,ascen plate is perforated and applied laterally to the band or collar10, so that it may be fastened firmly in place by means of the rivets15, which pass through the plate v14L and the collar or band. Thesegment is attached to the collar at a point opposite the divisiontherein and the flanges or ears 11, in order that the union ofthesegment with the collar may notinterfere with its expansion andcontraction in fitting said collar to and clamping it on the pipe. Thisholding-segment is oiiset' from the; pipe and the collar inorder that itmay stand in the path of the movable member forming a part of thelocking device, and said segment is provided in its outer edge with aseries of notches 16, which are spaced at proper intervals one from theother. The holding-segment is, furthermore, provided with stop-lugs17,-which are located at or near the ends of the segment beyond. theseries of notches therein and which project outwardly from the the pathof the movable element of the looking device and to limit or arrest saidmovable element. v

The movable element is embodied in the form of an elastic arm or stem18, bent, preferably, from a single piece ofwire, and at one end thiswire arm or stem is curved to form the finger-piece 19, by whichthe armand the damper may be readilyshifted without the fingers of the operatorcoming in contact with the Stovepipe or the damper. The other endnotched edge of said segment, so as to lie in 1 of the wire arm or stemis bent to form the triangular head 20, whichlics at right angles to thestraight length of the arm or stem, and in bending the wire to form thishead the f rec extremity of saidwire is looped or'hooked, as at 21,around the arm, as clearly shown by Fig. 4. By providing the enlargedhead at one end of the arm or stem and arranging the head at rightangles to said arm the movable element of the lockin g device is adaptedto be applied firmly against one side or face of the fingerpiece on anordinary damper.

In Figs. 1 and 2 of the drawings I have illustrated my locking deviceapplied operatively to a stov'epipe 22 and a damper 23, thelatter-having a journal rod orshaft 24, which is provided at one endwith a finger-piece 25. It will be understood that these elements areordinary in the art and that they may be of any preferred construction.

My locking device is designed to be made and sold as an article ofmanufacture separate from the damper, and to enable the looking deviceto be readily applied to the pipe and damper without riveting orsoldering the elements in place on the pipe and damper I haveconstructed the lockiug-arm for firm and ready union with thefinger-piece of the damper and have provided the band, which is adaptedto be clamped easily in place on the pipe, in order to hold the notchedsegment in proper relation to the locking-arm. It will of course beunderstood that the locking contrivance maybe sold with the pipe anddamper, if desired.

I In applying the locking device to a damper the divided band or collar10 is slipped around the pipe and adjusted to a position thereonadjacent to the finger-piece of the damper. The clamping-band may bearranged above or below the damper, preferably below said damper, asshown by the drawings, and the holding-segment lies adjacent to andconcentric with the journal stem or rod 24 of the damper. The head 20 ofthe locking-arm is applied against one side or face of the fingerpiece25, so as to bear firmly thereon, and said head and finger-piece arefastened together by the Wire or bail '26, which has its looped ends 27engaging with the head 20 and which also straddles the finger-piece 25in order to firmly attach the locking-arm and the damper finger-piecetogether. The position of the damper may be changed or shifted bygrasping the bent end 19 of the locking-arm and swinging the arm acrossthe notched edge of the segment, and this arm is adapted to spring orsnap into either of the series of notches for the purpose of securelyholding the damper to its adjusted position. lVhen the lockingarmengages with the notch at the bottom end of the segment, the damper isclosed across the pipe; but by shifting the arm to engage with the notchat the outer end of the segment the damper occupies a position in linewith the pipe to open the smoke-passage thereto. The damper may bepartly closed across the pipe to different positions in order toregulate the draft, and in either of its adjusted positions the arm orstem 18 may be engaged with one of the notches for the purpose ofholding the damper in place.

My locking device maybe used on any kind of a stovepipe and inconnection with any style of damper. 'It may be easily and quicklyapplied to dampers andpipes already in use, and the employment of theclamping band or collar obviates the'necessity for riveting or solderingthe notched segment to the pipe. The device is simple and cheap inconstruction, and it is efficient and reliable in service.

Changes may he made in the form and proportion of some of the parts,while their essential features are retained and the spirit of theinvention embodied. Hence I do not desire to be limited to the preciseform of all the parts, reserving the right to vary therefrom.

Having thus described the invention, what I claim isl. A damper-lockingdevice consisting of a divided band orcollarhaving means for clamp ingthe same around a Stovepipe, a yieldable arm or stem having a head forattachment to a damper, and a notched holding-segment attached at oneend to said band or collar and extending outwardly therefrom to lie inthe path of said yieldable arm or stem, which arm, by its inherentelasticity, is adapted to spring into engagement witheither of thenotches in said segment, substantially as described.

2. The combination with a Stovepipe, and a damper, of a band or collarclamped to said pipe, a notched segment fixed to said band or collar,and an elastic arm or stem having one end thereof bent to form a broadhead which is applied against one side of, and is united firmly to, afinger-piece on the damper, said arm springing into engagement with thenotched segment to be held thereby in its adj usted positions,substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

THOMAS FRANCIS FALLON.

Witnesses:

JOHN B. WEFERS, JOHN DENNISON.

